I sure hope mine holds up. My Grandpa bought it in like 1982 at the Jockey Lot, and its a cheap brand like Buffalo or something. It'll run an impact wrench to 130ibs. of torque is all I know. After 35 yrs., I put a little Lucas oil stabilizer in it. I know he never changed the oil.

I think its less than 5hp. And I'm sure he paid less than $300 for it. Oh, and the same brand impact wrench is near 40 years old now! Still use it all the time like day one.